3x-7=5-(6x+21)

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Solution for 3x-7=5-(6x+21) equation:


Simplifying
3x + -7 = 5 + -1(6x + 21)

Reorder the terms:
-7 + 3x = 5 + -1(6x + 21)

Reorder the terms:
-7 + 3x = 5 + -1(21 + 6x)
-7 + 3x = 5 + (21 * -1 + 6x * -1)
-7 + 3x = 5 + (-21 + -6x)

Combine like terms: 5 + -21 = -16
-7 + 3x = -16 + -6x

Solving
-7 + 3x = -16 + -6x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '6x' to each side of the equation.
-7 + 3x + 6x = -16 + -6x + 6x

Combine like terms: 3x + 6x = 9x
-7 + 9x = -16 + -6x + 6x

Combine like terms: -6x + 6x = 0
-7 + 9x = -16 + 0
-7 + 9x = -16

Add '7' to each side of the equation.
-7 + 7 + 9x = -16 + 7

Combine like terms: -7 + 7 = 0
0 + 9x = -16 + 7
9x = -16 + 7

Combine like terms: -16 + 7 = -9
9x = -9

Divide each side by '9'.
x = -1

Simplifying
x = -1

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